Home / 12,800,315.10-19,200,491.14-5,227,280.85

Finding the Fourth Proportional to 12,800,315.10, 19,200,491.14 and 5,227,280.85

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Solution

The fourth proportional to 12,800,315.10, 19,200,491.14 and 5,227,280.85 is: 7,840,928.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,800,315.10 : 19,200,491.14 = 5,227,280.85 : x
  2. Step 2: Convert to fraction form
    12,800,315.10/19,200,491.14 = 5,227,280.85/x
  3. Step 3: Cross multiply
    12,800,315.10x = 19,200,491.14 × 5,227,280.85
  4. Step 4: Simplify right side
    12,800,315.10x = 100,366,359,668,581.50
  5. Step 5: Solve for x
    x = 100,366,359,668,581.50/12,800,315.10
  6. Step 6: Final answer
    x = 7,840,928.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.